The average annual growth rate of primary and upper primary schools between 1951 and 1999 was 2.30 per cent and 5.58 per cent, respectively. However, regional variations in the growth of educational institutions exist.
Entre 1951 y 1999, la tasa de aumento anual media de las escuelas primarias y primarias superiores fue de 2,30 y 5,58%, respectivamente, aunque este aumento varía entre las regiones791.